Hi,
There are wide range of courses for pcb students after 12 th such as -

Through neet exam you can go for courses like MBBS , BDS , BAMS , BHMS . These are priority courses for most of the biology students but it totally depends upon your interest whether you want to go for it or not .

Next thing is you can do bsc. In variety of courses like bsc. Veterinary science , Agriculture,  Fisheries,  nursing .

Also bsc in courses like history , geography , political science , biology , chemistry , physics , public administration,  etc.

Other professional medical courses - bsc in radiology, x ray technology,  anesthesia technology,  optometry,  physiotherapy , etc.
Hope it helps....